/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlineGameItemStatsInterface.h
Items used to make impact and who the impact target is
void ItemImpact ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & LocalUserId, const [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & TargetActors, const [FString](API\Runtime\Core\Containers\FString) & ImpactInitiatedBy, const [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & ItemsUsed, [FOnItemImpactComplete](API\Plugins\OnlineSubsystem\Interfaces\FOnItemImpactComplete) CompletionDelegate )